I mean, GP did open up by saying it was an anecdote, not that it was evidence that electrotherapy works.
It isn't convincing given the time frame / lack of comparison.
Hormonal changes mean people have permanent differences in their skin at specific points in time. Eczema is known to respond more cyclically with menstrual cycles, which is a lot easier to correlate.
https://en.wikipedia.org/wiki/Antimicrobial_properties_of_co...
I’m half tempted to buy myself a copper plate to stand on.
Also copper is biocidal, so maybe there's something there.
But you can treat their data as garbage, pseudoscience, backed by nothing. Because it is. Any effects are likely to be placebo. Wait for real research. Science isn’t a popularity contest.